@rjf Isn't the square root defined to be positive?
Sure: x^2=y <=> x=+/-sqrt(y)
But I think you would never consider f(x):=sqrt(x) to have the codomain of
all negative numbers.
At least I would expect a CAS to interpret a square root to be positive.
rjf schrieb am Mittwoch, 5. August 2020 um 20:
Sry for the double posting.
My first post just didn't show up and I thought something went wrong.
NicoJG schrieb am Sonntag, 2. August 2020 um 18:31:00 UTC+2:
>
> Hi,
>
> I found a bug where a definite integral is calculated wrong.
> WolframAlpha result for comparison.
&
Hi,
I found a bug where a definite integral is calculated wrong.
WolframAlpha result for comparison.
Code:
integrate(sqrt(2-2*cos(x)),x,0,2*pi)
Also if I type show() instead of print() SageMathCell won't show anything.
Also the indefinite integral does not simplify well.
[image: sage_wrong_int